Hardi ZENIT 400 Original Instruction Book

Contents

745 - OperationAdjusting the BK/2 Operating UnitATTENTION! It is very important that the operating unit is welladjusted. Before using the equipment for the first time, it isnecessary to adjust the constant pressure valves at each sectionvalve.During this procedure, the individual return capacity of each sectionis adjusted, so that it returns the same amount of liquid that wouldnormally be sprayed through all the nozzles at the section when open.This avoids variations in pressure when one or both sections are shut.The adjustment procedure is the following:1. Open both sections via the lever taps.2. Set the pressure at, for example, 3 bar.3. Close one of the Sections.4. Adjust the constant pressure valve of the closed section valve until the pressure gauge indicates 3 bar again.5. Open the section valve again and repeat this procedure for the other section valve.6. Verify the adjustment by opening both sections at the same time or one by one. If the operating unit is correctlyadjusted the pressure always remains unchanged.ATTENTION! It is recommended to carry out this adjustment as close to the intended working pressure aspossible.ATTENTION! Carry out this adjustment every so often as somebody may accidentally change the position of thepressure equalisation valveATTENTION! once the pressure adjustment has been performed, it only needs readjustment when:1. Another nozzle with a different capacity is used.2. The nozzle output has increased due to wear.MC/2 operating unitThis high-pressure manual operating unit is used in configurations withpiston or diaphragm pumps.It consists of a pressure valve with a built-in pressure gauge.To adjust the pressure, turn the black handle. To increase the pressure,turn the handle clockwise. To decrease pressure, turn it anti-clockwise.The spray can be controled from the tractor using the two remotelevers.Each lever controls one section valve. You can select one section, twosections or no sections open.A